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Kernel->usbdev: add class node to enable/disable otg usb

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This commit is contained in:
zjy
2017-12-15 17:26:52 +08:00
committed by cjp
parent a1f4e0ce8e
commit 4d8f6f5be7
1 changed files with 59 additions and 0 deletions
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59
kernel/drivers/usb/dwc_otg_310/usbdev_rk32.c
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@ -973,10 +973,52 @@ static const struct of_device_id rk_usb_control_id_table[] = {
#endif
static ssize_t firefly_otg_read_ctl_status(struct class *cls, struct class_attribute *attr, char *_buf)
{
return sprintf(_buf, "%d\n", gpio_get_value(control_usb->otg_gpios->gpio));
}
static ssize_t firefly_otg_write_ctl_status(struct class *cls, struct class_attribute *attr, const char *_buf, size_t _count)
{
if('0' == _buf[0])
{
gpio_direction_output(control_usb->otg_gpios->gpio, 0);
}
else if(_buf[0]>'0')
{
gpio_direction_output(control_usb->otg_gpios->gpio, 1);
}
return _count;
}
static ssize_t firefly_host_read_ctl_status(struct class *cls, struct class_attribute *attr, char *_buf)
{
return sprintf(_buf, "%d\n", gpio_get_value(control_usb->host_gpios->gpio));
}
static ssize_t firefly_host_write_ctl_status(struct class *cls, struct class_attribute *attr, const char *_buf, size_t _count)
{
if('0' == _buf[0])
{
gpio_direction_output(control_usb->host_gpios->gpio, 0);
}
else if(_buf[0]>'0')
{
gpio_direction_output(control_usb->host_gpios->gpio, 1);
}
return _count;
}
static CLASS_ATTR(otg_hw_ctl, 0666, firefly_otg_read_ctl_status, firefly_otg_write_ctl_status);
static CLASS_ATTR(host_hw_ctl, 0666, firefly_host_read_ctl_status, firefly_host_write_ctl_status);
static int rk_usb_control_probe(struct platform_device *pdev)
{
int gpio, err;
struct device_node *np = pdev->dev.of_node;
struct class *otg_drv_class;
struct class *host_drv_class;
int ret = 0;
control_usb =
@ -1047,6 +1089,23 @@ static int rk_usb_control_probe(struct platform_device *pdev)
gpio_direction_output(control_usb->otg_gpios->gpio, 0);
}
host_drv_class = class_create(THIS_MODULE, "host_hw_ctl");
if(IS_ERR(host_drv_class))
printk("create host class failed \r\n");
else
{
ret = class_create_file(host_drv_class, &class_attr_host_hw_ctl);
}
otg_drv_class = class_create(THIS_MODULE, "otg_hw_ctl");
if(IS_ERR(otg_drv_class))
printk("create otg class failed \r\n");
else
{
ret = class_create_file(otg_drv_class, &class_attr_otg_hw_ctl);
}
out:
return ret;
}